{"product_id":"guidecraft-unit-block-marble-run-40-pc-set","title":"Unit Block Marble Run - 40 pc. set - US 4890","description":"\u003cp\u003eChildren 3 and up can begin early exploration of physics, STEM lessons and architectural design using the Unit Block Marble Run - 40 pc. set. Rubberwood blocks feature drops, bumps and routed paths that allow for multiple building opportunities. 10 double-sided concept cards provide building inspiration for different block arrangements as well as corresponding lessons related to physics theories. Set includes 4 starter acrylic marbles and 36 block pieces scaled to unit block proportions allowing for multiple run path possibilities.\u003c\/p\u003e","brand":"Guidecraft","offers":[{"title":"Default Title","offer_id":67685748703476,"sku":"US-4890-DEFAULT-TITLE","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0855\/9847\/0388\/files\/2026-08-24_010_G2060_Unit_Block_Marble_Run_40_pc._set_Main.jpg?v=1791010775","url":"https:\/\/guidecraftsus.shop\/products\/guidecraft-unit-block-marble-run-40-pc-set","provider":"Guidecraft outlet shop","version":"1.0","type":"link"}